Flow Properties

Flow properties control the InTime flow (Overview: The InTime Flow). These properties are described in the sections that follow.

Not every property applies to all flows, for example, when using the local run target, properties for remote run targets are not applicable. In other cases, recipes might override certain configuration properties and you will not be able to set those. One example is the strategy algorithm which automatically set to the “educated” strategy when running the InTime Default Recipe. InTime disables properties which are not applicable to the current flow and explains why in each property’s tooltip.

When using InTime in Tcl command line mode, you can change flow properties via the flow series of commands. For example:

# Set the value of a property:
flow set run_target local
# Get the value of a property:
set run_target_value [flow get run_target]
# Show current flow configuration:
flow properties

Throughout the sections below, the Tcl names used for property names and their possible values are shown next to the equivalent InTime GUI strings, formatted like (this).

General Properties

These properties control the most important aspects of the flow.

  • Run Target (run_target): Specifies where a job is compiled. For details on the different run targets, see Understanding Run Targets. Default: depends on the available license. When no license is registered the default is plunify_cloud, otherwise the default is local.

    • Local (local): Run all strategies on the machine where InTime is being run.
    • Private Cloud (private_cloud): Run all strategies using the InTime Private Cloud.
    • Plunify Cloud (plunify_cloud): Run all strategies using the Plunify Cloud.
  • Runs Per Round (runs_per_round): The number of strategies to compile per iteration. You can set the number of runs to 0 in which case InTime compiles only the parent revision. This lets you manage and build up a comprehensive history of all the builds performed on a design, even if you are not generating strategies via InTime. Note that InTime learns more effectively with a higher number of runs. Default: 10, Valid Range: 0-1000.

  • Rounds (rounds): The number of iterations (each iteration consists of one or more strategies). Similar to runs per round, the more rounds you run, the more effective InTime becomes. Default: 3, Valid Range: 1-100. The total number of runs will be runs_per_round * rounds.

  • Concurrent Runs (concurrent_runs): The number of strategies to compile in parallel. The context of concurrency and the default value depends on the selected run target:

    • Local: The number of concurrent runs on the local machine. Default: 1.
    • Private Cloud: The number of workers to assign to this job. Default: The concurrent run limit of the private cloud license.
    • Plunify Cloud: The number of servers to assign to this job. Default: 100.

Parent Revision Properties

Properties related to the parent revision of each round within a job. Each round has a parent revision which is the point of reference for generating strategies and determining result improvements, etc. For iterative recipes, the parent revision of the very first round is referred to as the base revision (the root of the generated results tree), while parent revisions of subsequent rounds are called parent revisions. Finally, when opening a project, InTime detects the active revision / run in the project and keeps track of it. This revision is referred to as the default revision within InTime and is displayed in the GUI.

  • Initial Compilation (initial_compilation): The run target to use when InTime builds the base revision of the design. Default: local.

    • Local (local): Build using the machine on which InTime is running.
    • Remote Target (remote_target): Build using the remote run target specified by the run_target property. When run_target is set to local, this option has no effect and reverts to local.
    • Skip (skip): If the base revision’s results are not required, choose this to reduce runtime. Some recipes, such as the seed exploration recipes, will automatically use this run target.
  • Existing Results (base_revision_existing_results): Indicates how existing base revision results are handled. Default: prompt in GUI mode, rerun in tcl mode. Note: When initial_compilation is set to skip, this property has no effect.

    • Prompt (prompt): Ask what to do using a message box that automatically re-uses results after 30 seconds. Note: When set to this value and InTime is run in tcl Console or batch mode, InTime will do a re-use.
    • Re-use (reuse): Use existing results to save time.
    • Re-run (rerun): Clear existing results and compile again. Note: If there have been changes to the design, set this property to rerun in order to force an update.
  • Missing Results (base_revision_existing_results): Indicates how missing base revision results must be handled. Default: prompt in GUI mode, rerun in tcl mode. Note: When initial_compilation is set to skip, this property has no effect, also, this property is only available through the Tcl command set. Also note that this property is only changeable through the Tcl console.

    • Prompt (prompt): Ask what to do using a message that automatically re-runs the design after 30 seconds. Note: When set to this value and InTime is run in tcl mode, InTime will default to rerun.
    • Re-run (reuse): Compiles the design on the specified run target (initial_compilation).
    • Stop (stop): Stop the flow (Not recommended).
  • Name (parent_revision_name): The topmost revision in a series of compilations. Initially, this is set to the FPGA project’s active revision, but subsequently, the user can change it to any revision in the project or in its InTime build history. Default: The active revision / run of the FPGA project.

  • Job Id (parent_revision_job_id): When 0, InTime will look up the parent_revision_name from the project and fails if it does not exist. On the other hand, when not 0, InTime will attempt to find a job with the ID specified in the project’s InTime run history. If found, InTime will look for a revision matching parent_revision_name within that job, and use that strategy along with its results as the parent revision for the next revision. Default: 0.

The InTime GUI makes it easy to set any result in a project’s history as the parent revision of the next iteration via right-clicking on the result in the project history and selecting “Set As Parent Revision”. See recipes_further_exploration for more information on setting a custom parent revision.

Flow Control Properties

Properties which control flow decisions and outcomes.

  • Stop When Goal Met (control_stop_when_goal_met): When true, stop as soon as one of the generated strategies meets the design goal. Otherwise, continue until the recipe completes. Default: true.

  • Create Bitstreams (control_create_bitstreams): Indicates if programming files should be generated for each strategy. Normally it does not make sense to do so since programming file generation adds to runtime. Default: false. A side-effect of setting this to false is that power estimates will not be done.

    • Altera QuartusII: When disabled runtimes will be shorter, but power data will be unavailable.
  • Reuse Synthesis Results (control_reuse_synthesis_results): Indicates if synthesis results should be reused in order to decrease build runtimes. When enabled, routing only exploration is done, reusing synthesis results from the parent revision. Note that this property is automatically enabled/disabled by the Placement Seed Exploration recipe. Also note the following restrictions:

    • It is only supported for the following strategy algorithms: educated, oneshot
    • It is only supported when initial_compilation is set to local.
    • It is not available for the plunify_cloud run target.

Remote Job Properties

Properties related to jobs being run remotely.

  • Off-Peak (remote_off_peak): Use a cloud feature called “Spot Instances” to save 50% of your cloud credits on average. Tradeoffs are that servers take longer (up to 30 minutes) to start and builds may be terminated. Recommended for non-time-critical jobs. Supported remote run targets: plunify_cloud. Default: false.

  • Auto-Assign Workers (remote_auto_assign): Indicates if remote workers must automatically be assigned. Auto-assignment is always done for plunify_cloud jobs and private_cloud jobs with an InTime Group license. The ability to control worker assignment manually is available only with InTime Enterprise licenses. Default: true.

  • Server Type (remote_server_type): The type of Amazon servers to use for Plunify cloud jobs. For more information on server specifications please refer to the Plunify Credits Store. Default: small.

    • SMALL (small)
    • MEDIUM_EX (medium_ex)
    • MEDIUM (medium)
    • LARGE_EX (large_ex)
    • LARGE (large)
    • XLARGE (xlarge)

Training Data Filter Properties

Training data filter properties determine which previous build results are used as training data for the machine learning algorithms when generating strategies for the educated algorithm(s). Default: Design&Device&ToolchainVersion.

  • Design: Only apply previous learning outcomes linked to the open project’s design.

  • ToolchainVersion: Only apply previous learning outcomes linked to the current vendor toolchain version.

  • DeviceFamily: Only apply previous learning outcomes linked to the device family of the open project’s design. For example: Cyclone II, Stratix V.

  • Device: Only apply previous learning outcomes linked to the device of the open project’s design. For example: EP2C5F256C6.

  • DevicePackage: Only apply previous learning outcomes linked to the device package of the open project’s design. For example: FBGA, TQFP.

  • DeviceSpeed: Only apply previous learning outcomes linked to the device speed grade of the open project’s design. For example: 6, 7.

  • Jobs: Only apply previous learning outcomes linked to the specified jobs across all designs for which results are stored in your InTime runs database. Jobs can be specified using the following syntax:

    1. =1,5,7: Specify individual jobs as a comma separated list preceded with =.
    2. !=1,5,7: Exclude individual jobs by placing a ! in front of the job number, for example: !=1,5,7
    3. >5: Specify job ranges. Supported operators include: < <= > <=.

The educated adjustment properties can be set in the Tcl console via the training_data_filter property. For example:

flow set training_data_filter Design&Device&Jobs=5,6
flow set training_data_filter Design&Device&Jobs>=5
flow set training_data_filter Design&Device&Jobs!=5,6

Cleaning Properties

Properties which control how InTime does housekeeping and cleans up files created during the InTime flow.

The following items can be cleaned up per strategy:

  • Generated Files (generated_files): Files generated while creating, running and analyzing strategies. These include all files generated by the vendor tool as well as additional files created by InTime during result analysis. InTime puts all generated files in the <project_dir>/plunify.jobs/<job_id> directory. When the cleaning properties are not configured to clean the generated files, the user can manually inspect and remove the required files from this directory at any time. Note: InTime keeps specific files for each revision in order to learn from the results. Those files are not removed when this property is set.
  • Project References (project_references): Changes made to the project that are related to InTime strategies, including new project revisions etc.

The files to clean are set per strategy outcome. The following outcomes can be configured:

  • Met Goal (met_goal): Strategies which were built and evaluated successfully and which met the design goal.
  • Success (success): Strategies which were built and evaluated successfully but which did not meet the design goal.
  • Stopped (stopped): Strategies which were stopped, either by the user or due to another strategy meeting the design goal (see control_stop_when_goal_met for more information).
  • Failed (failed): Strategies which failed.

The Generated Files cleaning properties are controlled either through the visual flow properties in the InTime GUI or through the Tcl command line interface. The Project References cleaning properties are only controlled through the Tcl command line interface. For an overview of the current clean configuration, use the flow get clean command:

plunify> flow get clean
Clean operations per strategy outcome:

-> clean generated_files = false
-> clean project_references = false
-> clean generated_files = true
-> clean project_references = true
-> clean generated_files = true
-> clean project_references = true
-> clean generated_files = true
-> clean project_references = true


The above configuration is the default configuration. To restore this default configuration, use flow set clean restore_defaults.

To change the default configuration, use the following command and one of the specified sub-commands:

flow set clean <all,generated_files,project_references> <run_state> <true,false>

For example:

# To keep all generated files:
flow set clean generated_files all false

# To keep all generated files only for builds which fail or meet the design goal:
flow set clean generated_files failed true
flow set clean generated_files met_goal true

# To clean everything:
flow set clean all all true